VK Swap Discussion...

bullitt5897

So I have been contemplating the idea of using the latest VK v8 in a swap. The motors can be had for cheaper than our VHR motors...

My Ideal setup:

De-Bored VK56VD from 5.6L to 4.8L block with lightweight forged internals. By doing this we have effectively made a squared v8 @ 92 Bore and 92 stroke... A very potent combination! This will give us the strongest v8 possible. Personally, I would want a high compression 12.1~13.0:1 compression ratio and 9,000 RPM red line.

Optional: Flat Plane Crank shaft... What this would do would even out the exhaust pulses and effectively make the motor act as two I4's strapped together... Which means you would have a lighter assembly which revs faster, a larger power band, and a very unique sound geared to sound similar to a formula 1 style car in higher RPM's.




Why the VK56VD?: This is the latest version of the VK motor which supports both Direct Injection and VVEL! This would be the closest VK motor to a direct swap that hopefully in theory we could keep our ECU....

Why De-Bore?: Toyota and many others have proven that a squared setup between bore and stroke produces the strongest motors... Whether it is N/A or FI a Squared motor is going to be the most reliable.

Why High Compression?: Because RACECAR!

Why 9,000 RPM?: See Above ^^^ lol also a broader RPM range gives us more room to work with on the motor. Would a De-Bored aka "Sleeved" motor make it to 9,000 rpm? I dont know... It would be fun to try though!

Why Flat Plane Crank?: Ferrari and many other exotic v8 cars have used this technology and have had impressive results with it. Remember the 458 Italia???? some argue is the best production v8 of all time... Lets hear that bad boy scream!




What are your thoughts on the subject?

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bullitt5897

This would be an amazing and joyous sound if it came from under the hood of our cars:

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Unique_Z

It's you again?

LOL JK

I think this would be a great build and i think i've seen one (work in progress). Just don't tell me you're gonna buy a third Z for your daily again

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bullitt5897

Lol this would be a down the road project... Lol nothing immediate just wanted to started the conversation in the community.

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SS_Firehawk

You know, GTM is balls deep in making VK swaps easier for us. It may be a good idea to have a chat with them about it.

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Nut_N_Much

Wow, I would love to make this swap happen.. A light wieght V8 that revs to 9,000 is awesome no matter what car you put it in. We had a 302 Boss in a truck and that was fun up to 6 or 7,000 rpm.

I like the idea very much. Wire harness, sensor maping and building would be PITA. Might be better to have a Harness and ECU made spacific for our application.

What Trans would you want to use?

Drift Emporiums G35 Supercharged Titan V8 Drift Car - YouTube



Suscribed...

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Z370Z011

they are??.. man, i love GTM lol

bullitt5897

I have already been in talks with Sam I just don't want to be a first adopter again!!!! Lol. I love the Z as a car and I think we would be looking at the following items.

Engine mounts
Engine harness
Sensors
And miscellaneous items

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bullitt5897

That is a main engine harness

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Nut_N_Much

One the 350Z forum I was reading that Sam did this already to a guy in CA. The communist DMV in CA. was going to give them a hard time registering. Mainly because the trans swap and dash lights. As long as the dash lights match up to what the car had stock it would be good to register. Probably not an issue for a manual.


It would be cool to do it and make it a sleeper with cut out's .

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Rusty

I wouldn't de-bore it. I would short-stoke it, and use longer rods for a better ratio. At 9,000 rpm, with a longer stoke. Your piston speed may be too high for the rings to live.

Here's a quote from a book I read:

Well, the modern Formula 1 engine is an incredible beast with a spec sheet that makes car geeks like me queasy. The basics are out-of-this-world incredible. From just 3.0 liters and 10 cylinders—without horsepower-enhancing turbocharging or supercharging—an F1 engine makes about 900 horsepower. It does this by revving to an incredible 19,000 rpm, or more than double what a rev-happy Honda S2000 engine spins to.

To keep the pistons and connecting rods from flying apart at those revolutions, an F1 piston travels only about 1.6 inches compared with the four-inch stroke of the Corvette Z06 V-8. The bore is roughly 3.80 inches, comparable to the 4.13-inch bore of the Vette's 7.0-liter mill.

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IDZRVIT

Just imagine if you could rev that LS to 19K! Maybe if one spent untold millions in engine R&D. Well, probably not due to engine dimensions as Rusty suggests.

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Rusty

Would we want to use a VK56DE or the VK56VD for the swap?

The VK56DE is a 5.6 L (5552 cc) version built in Decherd, Tennessee. Bore is 98 mm (3.9 in) and stroke is 92 mm (3.6 in). Output is 317 hp - 320 hp (227 kW) at 4900 rpm with 385 to 393 lb·ft (522-533 Nm) of torque at 3600 rpm. It has aluminum-alloy block and heads and low-friction molybdenum-coated pistons. The valvetrain is a dual overhead cam (DOHC) design with a continuously variable valve timing control system (CVTCS) on the intake valves. It also has 4 valves per cylinder with micro-finished camshafts and ductile iron cylinder liners for increased durability.

Motorsport

Nismo also uses the VK56DE for FIA GT1 racing. In race trim, it produces 600 horsepower and 479 pound-feet of torque.[5]

The Nissan Motorsport VK56DE was launched in Australia for the V8 Supercars Championship in 2013 by Kelly Racing in Melbourne. The engine has been reduced in capacity to 4,990cc to fit the V8 Supercars regulations. It has a bore and stroke of 102.69mm x 75.31mm. It will be fitted to a Nissan Altima version of the V8 Supercars "Car of the Future" specification that will compete from 2013 onwards.[6]

Applications:

2004–present Nissan Armada, 317 hp (236 kW) and 385 lb·ft (522 N·m)
2004–present Nissan Titan, 317 hp (236 kW) and 385 lb·ft (522 N·m)
2004–2010 Infiniti QX56, 320 hp (240 kW) and 393 lb·ft (533 N·m)
2010–present Nissan Patrol, 320 hp (240 kW) and 393 lb·ft (533 N·m)
2008–2012 Nissan Pathfinder, 310 hp (230 kW) and 388 lb·ft (526 N·m)
2012–present Nissan NV2500 HD, 317 hp (236 kW) and 385 lb·ft (522 N·m)
2012–present Nissan NV3500 HD, 317 hp (236 kW) and 385 lb·ft (522 N·m)
2012–present Nissan NV Passenger, 317 hp (236 kW) and 385 lb·ft (522 N·m)
2009–present Nissan GT-R GT1, 600 hp (450 kW) and 479 lb·ft (649 N·m)
2013-onwards Nissan Altima, V8 Supercars Australia, 650 hp (480 kW)
Notes:

The Titan, Armada, and Pathfinder power figures are for regular 87 octane fuel. The 320 hp (240 kW) Infiniti QX56 is tuned more for premium (91+ octane) fuel.
Some VK56DE powered vehicles are E85 capable.


The VK56VD is a 5.6 L (5552 cc) 32-valve, DOHC, Direct Injection Gasoline (DIG) aluminum-alloy V8 and features Nissan's advanced VVEL (Variable Valve Event & Lift System). The direct injection system provides better wide-open throttle performance and improved fuel economy and emissions performance by reducing engine knock, improving combustion stability and controlling injection more precisely. In the Infiniti M56, it is rated at 420 hp (310 kW) and 417 lbf·ft (565 N·m) of torque. The engine is built at Nissan's Yokohama Engine facility.

Applications:

2010–present Nissan Patrol, 400 hp (300 kW) and 413 lbf·ft (560 N·m)
2011–present Infiniti QX, 400 hp (300 kW) and 413 lbf·ft (560 N·m)
2011–present Infiniti M56, 420 hp (310 kW) and 417 lbf·ft (565 N·m)

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Cell

The real question to ask is... what did everything cost? Or what will it cost to get this all done?

CSA0890

I would want to use the VK50VE if Nissan V8s were the only option. Otherwise LS3 for a budget build or a built LS7 for all out power